Manually blend exposures
Combine software and hardware exposure management
Capture an image with the grad filter in place, then quickly remove the filter and shoot a second frame. Open these shots as layers and mask out the unfiltered area, usually the ground at the bottom of the frame. It might seem counter-intuitive to use an ND grad and then blend exposures in software, however, there are advantages of doing this compared with either the hardware or HDR blending options.